PQ audits include :
- Harmonics, power quality and conducted EMI audits.
- PQ and conducted EMI investigations into marine equipment malfunction/failure
- Diagnosis and monitoring of common mode voltage and current (due to VFDs) and other EMC issues
- Studies (including harmonic modelling) on harmonics and related topics for power systems
- Consulting services regarding all aspects of PQ
Advanced harmonics, PQ and conducted EMI measuring equipment
For investigations, Sentinel Power Quality Group utilise advanced, cycle by cycle PQ recorders which capture every single cycle, harmonics to 512th (voltage) and 256th (current), capture every PQ event and record over 5000 power and PQ parameters automatically. The data captured is then analysed by powerful investigative software.
Sample PQ measurements :
Common mode and other EMI measurements
For higher frequency measurements 200MHz/500MHz digital storage oscilloscopes with spectrum analyser capability are utilised for SCR drive line notching, voltage spikes, VFD output and common mode voltage/current monitoring.
Samples of the effects of common mode voltage:
For medium voltage power systems dedicated VTs and CTs are normally utilised. For common mode and other EMI measurements, portable EMC spectrum analysers (1Hz to 30MHz) are also used together with differential adaptors and attenuation units for conducted common mode voltage and current measurements, near field probe kits and antennas for radiated emissions and sophisticated software to facilitate detailed reporting.
Dedicated PQ Engineers
Harmonic Solutions Marine PQ engineers are fully qualified electrical engineers to PhD level with extensive experience in harmonics, power quality and conducted EMI. All PQ engineers have considerable knowledge in other associated electrical disciplines including variable speed drives (AC and DC), generators, motors and other equipment.
All engineers have valid medical certificates. For applicable countries, Yellow Fever and AIDs (negative) certificates and Police Reports from countries of residence are available. Negative COVID-19 test certificates and vaccine passports, when applicable, can be provided.
Sample of customers/projects :
- Atlantis, The Palm
- Eternity Technologies
- Abu Dhabi Airport MTB/TCAJV
- Dubai Maktoum Airport
- Dubai Intl Airport/Honeywell
- Cleveland Clinic
- Mafraq Hospital
- Al Nakheel Hygienic Paper
- Dubai Metro/Serco
- Groupelec Morocco
- Mueller Middle East, Bahrain
- Al Gurg Automation & Controls
For information on Sentinel Power Quality Group range of products and services please click on the appropriate link below :
GridconTM Active Filter
Series Passive Harmonic Filters
du/dt Chokes & Sinewave Filters
Power quality monitoring
TVSS – Sinetamer